The bug
If a spawn egg is used on water sufficiently deep so that the water is targeted and not any blocks under it, the mob is spawned successfully but the hand does not display any animations. If a block is targeted instead, the hand will move.
Related issues
discovered while testing
relates to
Attachments
Comments


Also appears in all the MC 1.13 pre-releases.

Relates to MC-84611

@@unknown: I don't think it relates to that issue, because it's different.

Relates to MC-127094

Doesn't seem fixed in 19w37a

Confirmed not fixed in 19w37a.

Relates to MC-160981

Confirmed in 19w38b.